Resumen
Our Custom Electrophoretic-Coated Deep-Drawn Stainless Steel Shielding Covers are engineered to provide robust EMI/RFI protection, mechanical protection, and corrosion-resistant finish for printed circuit boards in industrial, telecom, medical, and aerospace electronics. Manufactured from premium stainless steels (SUS301 / SUS304 / SUS316L) using precision deep-drawing and progressive stamping, each shielding cover is finished with a uniform electrophoretic (e-coat) layer that delivers excellent corrosion resistance, consistent dielectric properties, and a prepared surface for secondary coatings or gasketing. We offer end-to-end OEM services — tooling, prototyping, high-volume production, secondary machining, assembly, and strict QA — to supply application-optimized shielding solutions that meet electrical, mechanical, and environment-driven requirements.
Características
| Atributo | Detalles |
|---|---|
| Lugar de origen | Xiamen, China |
| Marca | Marca blanca / OEM |
| Base Material | SUS301 / SUS304 / SUS316L Stainless Steel (other alloys on request) |
| Material Thickness | 0.3 – 3.0 mm (customizable) |
| Proceso | Deep drawing, progressive stamping, laser cutting, CNC bending/forming, hemming, spot welding |
| Electrophoretic Coating | E-coat (electrophoretic deposition), 5–25 μm typical thickness |
| Coating Color / Finish | Standard matte / satin; custom RAL or textured finishes available |
| Shielding Effectiveness | Typical 40–80 dB (application dependent; up to >80 dB with gasketed/sealed assemblies) |
| Tolerancia | ±0.01 mm (functional areas; general tolerance ±0.05 mm) |
| Tratamiento de Superficie | Passivation, electropolishing, bead blasting, or custom post-treatments |
| Certificación | ISO 9001:2015, IATF 16949 (optional), RoHS, REACH |
| Muestra de Tiempo de Entrega | 5–10 business days (prototype stamped part) |
| El tiempo de producción | 15–35 business days (tooling dependent) |
| MOQ | Flexible; prototyping to high-volume supported |
| Embalaje | Anti-corrosion wrap, foam supports, custom kits for assembly |
Manufacturing & Processes
- Tooling & Forming: In-house progressive dies and deep-draw tooling manufactured via CNC machining and wire/Mirror EDM ensure repeatable forming, tight flanges, and clean radii for PCB fitment.
- Metalworking: High-speed progressive stamping, laser blanking, CNC bending, and controlled deep drawing to preserve material grain and springback properties.
- Joining & Assembly: Precision spot welding, TIG welding, laser welding, and clinching for seams or integrated mounting features. Hemming and flanging for user-safe edges and robust mating surfaces.
- Surface Prep & E-Coat: Parts receive multi-stage cleaning and pre-treatment (alkaline wash, de-oxidation). Electrophoretic deposition (E-coating) produces uniform, conformal coatings on complex geometries; cured in controlled ovens to specified film thickness.
- Secondary Finishes: Optional electropolishing, passivation, or powder-coating over e-coat where additional aesthetic or chemical resistance is required. Gasket grooves, conductive paint or silver epoxy application, and RF gasket integration are available.
Surface Treatment & Coating Options
- Electrophoretic Coating (E-Coat): Uniform corrosion protection; excellent base for subsequent coatings; typical film 5–25 μm.
- Electropolishing: Lowers surface roughness, improves corrosion resistance and contact integrity where metal-to-metal contact is required.
- Passivation (Nitric / Citric): Restores stainless steel chromium oxide layer for enhanced corrosion resistance.
- Conductive Coatings / Selective Plating: Silver or nickel selective plating for improved contact conductivity at gasket or mating surfaces.
- Powder Coat / Polyester Topcoat: Weather-resistant decorative finishes over e-coat for outdoor or aesthetic applications.
- Custom Gasketing / EMI Gasket Integration: Silicone, conductive foam, or spring finger integration for high-SE assemblies.
Electrical & Mechanical Performance
- Shielding Effectiveness (SE): Designed and verified for target SE using lab measurements; typical performance 40–80 dB across 100 kHz–6 GHz depending on design, seams, and gasketing. SE validation per customer requirements (IEEE 299, MIL-STD-285, or equivalent available).
- Mechanical Integrity: Deep-drawn geometry provides high stiffness-to-weight ratio and repeatable spring tension for press-fit or screw-mounted assemblies.
- Thermal & Environmental: E-coat plus stainless steel construction withstands broad temp ranges and resists humidity, salt spray, and common cleaning agents.
Aseguramiento de la Calidad
We apply a rigorous QA program across material control, tooling, production, and final inspection:
- Incoming Inspection: Chemical and mechanical verification (material certificates, hardness, and thickness).
- Dimensional Control: CMM, 2D/3D optical scanning and SPC monitoring to ensure form, hole position, and critical tolerances.
- Coating & Surface Tests: Film thickness measurement (XRF / eddy current), adhesion tests (crosshatch), salt-spray corrosion testing (ASTM B117) and gloss/appearance checks.
- Electrical Testing: Shielding effectiveness validation, contact resistance checks at mating surfaces, and continuity testing where applicable.
- Process Traceability: Serialized lot coding, FAI (First Article Inspection) reports, process capability indexing (Cp/Cpk) on critical dimensions.
Applications
- PCB EMI/RFI shielding cans and covers for: telecom base stations, routers, medical electronics, industrial controllers, automotive ECUs, aerospace avionics, and precision instrumentation.
- Enclosures and internal partitions requiring both electromagnetic shielding and mechanical protection.
Factory Profile (one paragraph)
Our facility combines precision metalforming and surface-finish expertise to deliver complete shielding solutions: tool room for progressive and deep-draw die manufacture (CNC, EDM, WEDM), multi-ton progressive stamping and deep-draw presses, laser cutting and CNC bending lines, automated spot/laser welding cells, and dedicated e-coating lines with controlled bake ovens. Post-processing includes electropolishing, passivation, XRF coating analysis, and an in-house EMI test capability for shielding verification. ISO 9001 and IATF-aligned workflows, SPC monitoring, and full material traceability ensure consistent, production-ready parts from prototype to high-volume runs.
